Pneumatic car-window



(No Model.)

W. H.HEFPLEY. PNEUMATIC OAR WINDOW.

Patented Sept. 14,1897.

WITNESSES I JV V'EN TOR,

WILL/AM H. HEFFLEX UNITED STATES PATENT FFl'CE.

\VILLIAM ll. IIEFFLEY, OF ST. PAUL, KANSAS.

PN EU MATIC CAR-WI N DOW.

SlECIFICATION forming part of Letters Patent N 0. 589,831, dated September 14, 1897. Application filed February 1, 1897. Serial No. 621, i32, (N d l.)

To all 1071,0722, it nmlg concern:

Be it known that 1, WILLIAM H. HEFFLEY, a citizen of the United States, residing at St. Paul,in the county of Neosho and State of Kansas, have invented certain. new and useful Improvementsi n Pneumatic Car-Windows; and- I do hereby declare the following to be a f 111], clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention has reference to a novel construction in devices for controlling windows, sashes, and the like, and has for its object to provide a device by means of which a window or sash can be raised or lowered, and, furthermore, by means of which the same can be held in any desired position.

The invention also consists in the features of construction hereinafter more particularly set forth and specifically claimed.

In the accompanying drawings, forming a part of this specification, Figure 1 is a front elevation of a window provided'with devices constructed in accordance with this invention, and Fig. 2 is an enlarged cross-section just below the window-sill. Fig. 3 is a view of the clutching mechanism. Fig. i is a sectional View of the cock.

Referring nowt-o said drawings, 1 indicates the window-fra1ne, and :2 the window. Situ-' ated below the sill 3 is acylinder a, and within this cylinder is a piston 5, the piston-rod G ofwhich extends upwardly and through a plate 7 upon the sill 3 and is connected with the window-sash 2. The lower end of the cylinder 4 communicates with a pipe or passage 8 for supplying a propelling medium, such as compressed air. The cool; 9 at the lower end of the cylinder is arranged to establish communication between the pipe or passage 8 and the cylinder or for cutting oft this communication and opening the lower end of the cylinder to the atmosphere to allow the escape of air. Said cock is controlled by a rod 9, extending upwardly and provided with a handle 10 at the upper face of the plate 7. Pivoted on the lower face of the plate is a clutchdog 11, having an opening 12, through which the piston-rod 6 extends, while the end 13 of said clutch-dog 11 is situated to be engaged by a cam 14: upon the rod 9. The parts are so arranged that when the rod 9 is turned to 10 is turned to the right, which allows the compressed air to enter the cylinder, which causes the piston to rise and consequently the window. In rising the piston-rod passesfreely through the dog, as is obvious. When the hendle is turned to cut the air off, the settling of the window will throw the piston-rod into engagem entwith the clutch-dog, so that the parts will be firmly held in this position. When the handle is turned to the left to open the lower end of the cylinder to the atmosphere, the cam lat engages the tip 13 of the clutchdog and holds it in a position to allow the piston-rod to pass through the same, and thus as the air escapes the window is closed. As before pointed out, by turning the handle to the extreme left the clutch-dog is thrown into operative position with the piston-rod to prevent the window from being raised.

Itis understood, of course, that this device can be used without the employment of compressed air as a medium for raising and lowerin g the piston and simply as a device for holding the window in any adjusted position, it being noted that said parts can be used in this manner and will effectually prevent the window from falling, as will be clearly seen.

It is further noted that although I have shown the rod 6 as situated at the middle of the window, yet two of these rods could be employed equally as well which would be situated at each side of the window, the construction otherwise being the same.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination with a sliding window, of a cylinder havinga piston connected with said window, passages communicating with the lower end of said cylinder and with a source for supplying the controlling medium and with the atmosphere, a cock for controlling said passages, a rod for controlling said cock, and a clutch for engaging the said piston-rod and situated to be moved by said controllin g-rod IO rod for moving said clutch.

4:. The combination with a sliding Window having a downwardly-extending rod, of a pivoted clutch-dog engaging said rod and a cam carried by a, controlling-rod and engag' ing said c1utch-dog.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

VILLIAM H. HEFFLEY.

Vitnesses:

O. O. BAYER, I. P. WILLL iMs. 

